we take you inside a secretive flds community that one investigator compares tothetaliban. imaginethat. right here in the united states. first let's check in with isha sesay. >> reporter: game show host alex trebek isn't just on jeopardy, he's also talking about the terrifying moments when he was in jeopardy. we'll tell you about his run in with a burglar. that and more when anderson cooper 360 continues. call her. ok. [ cellphone rings ] hey. you haven't left yet. no. i'm boarding now... what's up? um...would you mind doing it again? last time. [ engine turns over ] oooohhhh...sweet. [ male announcer ] the chevy cruze with the my chevrolet app. the remote control car is finally here. well, now she's just playing with us. oh. [ horn honks ] somewhere in america, a city comes to life. it moves effortlessly, breathes easily. it flows with clean water. it makes its skyline greener and its population healthier. all to become the kind of city people want to live and work in. somewhere in america, we've already answered some of the nation's toughest questions. and the over sixty thousan